graphics: OPTIONS


LOGARITHMIC-X

  Requests the x axis be logarithmic in the following plot.

  This option is used mainly internally but you can use it
  from the input too. Don't be surprised however if your
  request is overruled !

LOGARITHMIC-Y

  Requests the y axis be logarithmic in the following plot.

  This option is used mainly internally but you can use it
  from the input too. Don't be surprised however if your
  request is overruled !

GRID

  Requests a grid be overlayed on the following plots, which
  can make reading the values easier.

  The appearance of the grid can be modified via the REPRESENT
  graphics command.

  By default, no grid is displayed.

TIME-STAMP

  Requests a time stamp be displayed on each plot. The string
  displayed in the time stamp can be modified with the STAMP
  graphics command.

  By default, a time stamp is displayed and the stamp indicated
  by default the version of Garfield used for making the plot.

CLEAR-BEFORE-PLOT

  By default, the (graphics) screen is cleared before and after a plot
  is/has been made. You may however wish to overlay to plots on the
  screen and therefore suppress the clears. This can be achieved by
  requesting NOCLEAR-BEFORE-PLOT and NOCLEAR-AFTER-PLOT.

  Via the graphics REPRESENT command, you can change for instance the
  colours of the curves, remove the titles and labels of the second
  plot etc.

CLEAR-AFTER-PLOT

  On workstations where graphics and printout are displayed in different
  windows, the automatic clear of the graphics screen after each plot
  is useless. You can suppress it by requesting NOCLEAR-AFTER-PLOT.

  This option may also be of use to overlay two consecutive plots.
  See CLEAR-BEFORE-PLOT for some hints in this respect.

WAIT-BEFORE-PLOT

  By default, a prompt is displayed to hit return before any graphics
  output is sent to the screen.

  This is useful on ordinary terminals, but less so on workstations,
  and you may wish to switch this option off on such devices.

WAIT-AFTER-PLOT

  By default, a message is displayed when the plot is finished and
  the user is then prompted to hit the return key before the screen
  is switched back to alphanumeric mode.

  This behaviour is not meaningful on workstations and it might
  therefore be a good idea to switch this option off on such devices.

EXECUTE-CONTROL-CHARACTERS

  Various characters have a special meaning for the underlying
  graphics system. With HPLOT for instance, the symbols [ and ]
  are used to indicate that the enclosed text should be shown
  using the Greek font.

  If you wish special characters to be interpreted this way,
  then specify the option EXECUTE-CONTROL-CHARACTERS. But many of the
  built-in plots contain special characters, e.g. [ and ] are used
  as delimiters of the units. These plots will therefore not come
  out right if you switch this option on. In practice, this option
  is only useful if you wish to have full control, in user plots,
  over the special characters that a specific graphics system offers.

  If on the other hand you select DISPLAY-CONTROL-CHARACTERS,
  then [ and ] are displayed as such. Furthermore, on some graphics
  systems, several special symbols are easily accessible:

  a. In units (recognised by the squared brackets that enclose
     them), the strings 'cm2', 'cm3', 'micron', 'microsec' and
     'microamp', are shown in their usual way (superscript 2 for
     'cm2', Greek mu for 'micron' etc.
  b. Some particle names (e.g. electron-, mu+, tau-) as well as
     some chemical compounds (e.g. CO2, C3H8) are shown the way
     they are normally printed with superscripts to indicate
     the charge and subscripts showing the number of atoms per
     molecule.
  c. Greek letters, diacritics and ligatures are accessible as
     SGML entities, e.g. &Ksi; é and ß. For a list
     of SGML entities, see for instance:
     http://home.eclipse.net/~lionheart/html/entities.html

  The default is DISPLAY-CONTROL-CHARACTERS.

Keyword index. Formatted on 10/11/98.